HP 30b HP 20b Business Consultant and HP 30b Business Professional User's Guid - Page 88

The Program Menu and Program Editing, outside - calculator review

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The Program Menu and Program Editing Now that we have been through some short examples, let us look at some of the programming details. > The Program menu displays a list of the ten programs that are in the calculator. Use the < and keys to scroll through the program menu. For each program, the number displayed at the bottom is the memory space used/occupied by the program and a checksum value of that program. For example, program 0 for the sphere uses 13 bytes and has a checksum of 104 (see Figure 2). Figure 2 There are 290 bytes of program space available. :x To erase all the programs, open the Reset menu (press ) from outside of program mode. In the reset menu, select Prgm. The number at the bottom of the display represents the I amount of programming steps in use. Press twice to erase all programs. < To erase a specific program, go to the program menu, select the program with the or > :xI keys, and press to erase that specific program. = To execute a program, select the program in the program menu and press . To edit or modify an existing program, select the program in the program menu and press I: < > 1. Review your program by pressing the or keys. { 2. Delete the currently displayed instruction by pressing . O :E 3. Exit the program by pressing or . 4. Any other key that you press will be inserted as an instruction in the program. > < O { : > 5. Insert an , , , or instruction by pressing (HOLD) and ,

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Programming
80
The Program Menu and Program Editing
Now that we have been through some short examples, let us look at some of the programming
details.
The Program menu displays a list of the ten programs that are in the calculator. Use the
>
and
<
keys to scroll through the program menu. For each program, the number displayed
at the bottom is the memory space used/occupied by the program and a checksum value of
that program. For example, program 0 for the sphere uses 13 bytes and has a checksum of
104 (see Figure 2).
Figure 2
There are 290 bytes of program space available.
To erase all the programs, open the Reset menu (press
:x
)
from
outside
of program
mode. In the reset menu, select
Prgm
. The number at the bottom of the display represents the
amount of programming steps in use. Press
I
twice to erase all programs.
To erase a specific program, go to the program menu, select the program with the
<
or
>
keys, and press
:xI
to erase that specific program.
To execute a program, select the program in the program menu and press
=
.
To edit or modify an existing program, select the program in the program menu and press
I
:
1.
Review your program by pressing the
<
or
>
keys.
2.
Delete the currently displayed instruction by pressing
{
.
3.
Exit the program by pressing
O
or
:E
.
4.
Any other key that you press will be inserted as an instruction in the program.
5.
Insert an
>
,
<
,
O
,
or
{
instruction by pressing
:
(HOLD) and
>
,
<
,
O
,
or
{
.
Note: you can
(HOLD)
(HOLD)
followed by a label number to go
to a specific label.